Hyper Delivery App Development

I'm looking for a comprehensive hyper delivery app and website focused on vegetables, fruits, and groceries. Three apps should cater to drivers, merchants, and customers, with a robust web-based admin backend.

The customer app must include:
- Real-time order tracking
- Payment gateway integration
- In-app chat support

I'd like to see detailed project proposals that outline your approach, timeline, and any relevant past work or experience. Ideal candidates should have expertise in mobile app development for both iOS and Android, as well as experience in building admin dashboards.